Memphis is a city in ancient Aegypt (and likewise Egypt). It is built near the Nile. Cleopatra often sailed her royal yacht from Memphis to have extravagant on board parties before returning back to the city.
Behind the scenes[]
Memphis may in fact be the same city in both worlds. If Aegypt was the ancient kingdom, as time passed it may have become known as Egypt. Cleopatra may have ruled in both via a time warp through withdrawal.